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<?xml version="1.0" standalone="no"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<refentry id="class-gdkregion">
<refnamediv>
<refname>gtk.gdk.Region</refname>
<refpurpose>an object representing a set of pixels on the screen (new in
PyGTK 2.10)</refpurpose>
</refnamediv>
<refsect1>
<title>Synopsis</title>
<classsynopsis language="python">
<ooclass><classname>gtk.gdk.Region</classname></ooclass>
<ooclass><classname>gobject.GBoxed</classname></ooclass>
<constructorsynopsis language="python">
<methodname><link
linkend="constructor-gdkregion">gtk.gdk.Region</link></methodname>
<methodparam></methodparam>
</constructorsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--get-clipbox">get_clipbox</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--empty">empty</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--equal">equal</link></methodname>
<methodparam><parameter
role="keyword">other</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--point-in">point_in</link></methodname>
<methodparam><parameter
role="keyword">x</parameter></methodparam>
<methodparam><parameter
role="keyword">y</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--rect-in">rect_in</link></methodname>
<methodparam><parameter
role="keyword">rect</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--copy">copy</link></methodname>
<methodparam></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--offset">offset</link></methodname>
<methodparam><parameter
role="keyword">dx</parameter></methodparam>
<methodparam><parameter
role="keyword">dy</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--shrink">shrink</link></methodname>
<methodparam><parameter
role="keyword">dx</parameter></methodparam>
<methodparam><parameter
role="keyword">dy</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--union-with-rect">union_with_rect</link></methodname>
<methodparam><parameter
role="keyword">rect</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--intersect">intersect</link></methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--union">union</link></methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--subtract">subtract</link></methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis>
<methodsynopsis language="python">
<methodname><link
linkend="method-gdkregion--xor">xor</link></methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis>
</classsynopsis>
<programlisting>
<emphasis role="bold">Functions</emphasis>
<methodsynopsis language="python">
<methodname><link
linkend="function-gdk--region-rectangle">gtk.gdk.region_rectangle</link></methodname>
<methodparam><parameter
role="keyword">rectangle</parameter></methodparam>
</methodsynopsis></programlisting>
</refsect1>
<refsect1>
<title>Description</title>
<para>A <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>
is an objrect holding a set of arbitrary pixels, and is usually used for
clipping graphical operations (see the <link
linkend="method-gdkgc--set-clip-region"><methodname>gtk.gdk.GC.set_clip_region</methodname>()</link>
method).</para>
</refsect1>
<refsect1 id="constructor-gdkregion">
<title>Constructor</title>
<programlisting><constructorsynopsis language="python">
<methodname>gtk.gdk.Region</methodname>
</constructorsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>a new <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>
object</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This constructor is available in PyGTK 2.10 and above.</para>
</note>
<para>Creates a new <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>.</para>
</refsect1>
<refsect1>
<title>Methods</title>
<refsect2 id="method-gdkregion--get-clipbox">
<title>gtk.gdk.Region.get_clipbox</title>
<programlisting><methodsynopsis language="python">
<methodname>get_clipbox</methodname>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>returns the smallest rectangle which includes all
of the region.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>get_clipbox</methodname>() method returns the
smallest rectangle which includes the entire region.</para>
</refsect2>
<refsect2 id="method-gdkregion--empty">
<title>gtk.gdk.Region.empty</title>
<programlisting><methodsynopsis language="python">
<methodname>empty</methodname>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>True if the region is empty.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>empty</methodname>() method returns True if the
region is empty.</para>
</refsect2>
<refsect2 id="method-gdkregion--equal">
<title>gtk.gdk.Region.equal</title>
<programlisting><methodsynopsis language="python">
<methodname>equal</methodname>
<methodparam><parameter
role="keyword">other</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">other</parameter> :</term>
<listitem><simpara>a <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link></simpara></listitem>
</varlistentry>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>True if the region is equal to
<parameter>other</parameter></simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>equal</methodname>() method returns True if the
region specified by <parameter>other</parameter> is equal to this
region.</para>
</refsect2>
<refsect2 id="method-gdkregion--point-in">
<title>gtk.gdk.Region.point_in</title>
<programlisting><methodsynopsis language="python">
<methodname>point_in</methodname>
<methodparam><parameter
role="keyword">x</parameter></methodparam>
<methodparam><parameter
role="keyword">y</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">x</parameter> :</term>
<listitem><simpara>the x coordinate of a point.</simpara></listitem>
</varlistentry>
<varlistentry>
<term><parameter role="keyword">y</parameter> :</term>
<listitem><simpara>the y coordinate of a point.</simpara></listitem>
</varlistentry>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>True if the point (x,y) is in the
region.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname></methodname>() method returns True if the point
specified by the coordinates <parameter>x</parameter> and
<parameter>y</parameter> is in a region.</para>
</refsect2>
<refsect2 id="method-gdkregion--rect-in">
<title>gtk.gdk.Region.rect_in</title>
<programlisting><methodsynopsis language="python">
<methodname>rect_in</methodname>
<methodparam><parameter
role="keyword">rect</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">rect</parameter> :</term>
<listitem><simpara>a rectangle (<link
linkend="class-gdkrectangle"><classname>gtk.gdk.Rectangle</classname></link>
or 4-tuple representing a rectangle) </simpara></listitem>
</varlistentry>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>a value indicating whether
<parameter>rectangle</parameter> is inside or outside the
region.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>rect_in</methodname>() method returns one of the
<xref linkend="gdk-overlap-type-constants"
endterm="gdk-overlap-type-constants-title"></xref> depending whether
the rectangle specified by <parameter>rect</parameter> is inside,
outside, or partly inside this region.</para>
</refsect2>
<refsect2 id="method-gdkregion--copy">
<title>gtk.gdk.Region.copy</title>
<programlisting><methodsynopsis language="python">
<methodname>copy</methodname>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>a new <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>
identical to the region</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>copy</methodname>() method returns a new <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>
identical to this region.</para>
</refsect2>
<refsect2 id="method-gdkregion--offset">
<title>gtk.gdk.Region.offset</title>
<programlisting><methodsynopsis language="python">
<methodname>offset</methodname>
<methodparam><parameter
role="keyword">dx</parameter></methodparam>
<methodparam><parameter
role="keyword">dy</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">dx</parameter> :</term>
<listitem><simpara>the distance to move this region
horizontally.</simpara></listitem>
</varlistentry>
<varlistentry>
<term><parameter role="keyword">dy</parameter> :</term>
<listitem><simpara>the distance to move this region
vertically.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>offset</methodname>() method moves this region
the distance specified by <parameter>dx</parameter> and
<parameter>dy</parameter>.</para>
</refsect2>
<refsect2 id="method-gdkregion--shrink">
<title>gtk.gdk.Region.shrink</title>
<programlisting><methodsynopsis language="python">
<methodname>shrink</methodname>
<methodparam><parameter
role="keyword">dx</parameter></methodparam>
<methodparam><parameter
role="keyword">dy</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">dx</parameter> :</term>
<listitem><simpara>the number of pixels to shrink this region
horizontally.</simpara></listitem>
</varlistentry>
<varlistentry>
<term><parameter role="keyword">dy</parameter> :</term>
<listitem><simpara>the number of pixels to shrink this region
vertically. </simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>shrink</methodname>() method resizes this region
by the amount specified by <parameter>dx</parameter> and
<parameter>dy</parameter>. Positive values shrink the region. Negative
values expand it.</para>
</refsect2>
<refsect2 id="method-gdkregion--union-with-rect">
<title>gtk.gdk.Region.union_with_rect</title>
<programlisting><methodsynopsis language="python">
<methodname>union_with_rect</methodname>
<methodparam><parameter
role="keyword">rect</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">rect</parameter> :</term>
<listitem><simpara>a rectangle</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>union_with_rect</methodname>() method sets the
area of this region to the union of the areas of this region and the
rectangle specified by <parameter>rect</parameter>. The resulting area
is the set of pixels contained in either the region or
<parameter>rect</parameter>. The value of <parameter>rect</parameter>
is either a <link
linkend="class-gdkrectangle"><classname>gtk.gdk.Rectangle</classname></link>
or a 4-tuple containing the position and size of a rectangle.</para>
</refsect2>
<refsect2 id="method-gdkregion--intersect">
<title>gtk.gdk.Region.intersect</title>
<programlisting><methodsynopsis language="python">
<methodname>intersect</methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">source2</parameter> :</term>
<listitem><simpara>a <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link></simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>intersect</methodname>() method sets the area of
this region to the intersection of the areas of this region and the
region specified by <parameter>source2</parameter>. The resulting area
is the set of pixels contained in both this region and
<parameter>source2</parameter>.</para>
</refsect2>
<refsect2 id="method-gdkregion--union">
<title>gtk.gdk.Region.union</title>
<programlisting><methodsynopsis language="python">
<methodname>union</methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">source2</parameter> :</term>
<listitem><simpara>a <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>union</methodname>() method sets the area of
this region to the union of the areas of this region and the region
specified by <parameter>source2</parameter>. The resulting area is the
set of pixels contained in either this region or
<parameter>source2</parameter>.</para>
</refsect2>
<refsect2 id="method-gdkregion--subtract">
<title>gtk.gdk.Region.subtract</title>
<programlisting><methodsynopsis language="python">
<methodname>subtract</methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">source2</parameter> :</term>
<listitem><simpara>a <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>subtract</methodname>() method sets the area of
this region to the subtraction of the areas of this region and the
region specified by <parameter>source2</parameter>. The resulting area
is the set of pixels contained in this region but not in
<parameter>source2</parameter>.</para>
</refsect2>
<refsect2 id="method-gdkregion--xor">
<title>gtk.gdk.Region.xor</title>
<programlisting><methodsynopsis language="python">
<methodname>xor</methodname>
<methodparam><parameter
role="keyword">source2</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">source2</parameter> :</term>
<listitem><simpara>a <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>.</simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This method is available in PyGTK 2.10 and above.</para>
</note>
<para>The <methodname>xor</methodname>() method sets the area of this
region to the exclusive-OR of the areas of this region and the region
specified by <parameter>source2</parameter>. The resulting area is the
set of pixels contained in either this region or
<parameter>source2</parameter> but not both.</para>
</refsect2>
</refsect1>
<refsect1>
<title>Functions</title>
<refsect2 id="function-gdk--region-rectangle">
<title>gtk.gdk.region_rectangle</title>
<programlisting><methodsynopsis language="python">
<methodname>gtk.gdk.region_rectangle</methodname>
<methodparam><parameter
role="keyword">rectangle</parameter></methodparam>
</methodsynopsis></programlisting>
<variablelist>
<varlistentry>
<term><parameter role="keyword">rectangle</parameter> :</term>
<listitem><simpara>a <link
linkend="class-gdkrectangle"><classname>gtk.gdk.Rectangle</classname></link>
or a 4-tuple representing a rectangle.</simpara></listitem>
</varlistentry>
<varlistentry>
<term><emphasis>Returns</emphasis> :</term>
<listitem><simpara>a new <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link></simpara></listitem>
</varlistentry>
</variablelist>
<note>
<para>This function is available in PyGTK 2.10 and above.</para>
</note>
<para>The <function>gtk.gdk.region_rectangle</function>() function
creates a new <link
linkend="class-gdkregion"><classname>gtk.gdk.Region</classname></link>
containing the area specified by
<parameter>rectangle</parameter>.</para>
</refsect2>
</refsect1>
</refentry>
|
